Abstract: Disclosed are a display method and a display apparatus for operation prompt information of an input control. The display method includes: during a user's interaction with the display apparatus, obtaining an operation instruction from a user; in response to the operation instruction, determining a target interaction mode for the user's interaction with the display apparatus; in response to a start instruction of an input control generated by invoking of the input control in the target interaction mode, obtaining target operation prompt information for the input control; and generating the input box on the user interface and display the target operation prompt information in the input box.

Abstract: A method for presenting EPG user interface, including: in response to a first input command, displaying an EPG user interface including a first presentation page; and in response to a second input command, switching the EPG user interface from the first presentation page to a second presentation page, where the first presentation page includes a first set of channels and programs in a first time period corresponding to the first set of channels; and the second presentation page includes the first set of channels and programs in a second time period corresponding to the first set of channels.

Abstract: A method for preparing isophorone diisocyanate by (1) reacting isophorone with hydrogen cyanide in the presence of a catalyst to obtain isophorone nitrile; (2) reacting the isophorone nitrile obtained in step (1) with ammonia gas and hydrogen in the presence of a catalyst to obtain isophorone diamine; and (3) subjecting the isophorone diamine to a phosgenation reaction to obtain the isophorone diisocyanate, wherein the content of impurities containing a secondary amine group in the isophorone diamine that undergoes the phosgenation reaction in step (3) is ?0.5 wt. The method reduces the content of hydrolyzed chlorine in the isophorone diisocyanate product, improves the yellowing resistance of the product, and the harm due to presence of hydrolyzed chlorine in the product is reduced.

Abstract: Disclosed are a display apparatus and a channel control method. The channel control method includes: upon receiving channel number information that constructs a channel number in a display apparatus from a control device, obtaining a second channel number according to an instruction for indicating the channel number information each time; determining whether a length of the second channel number is equal to the maximum length of a channel number of a channel list in the display apparatus; and in response to the length of the second channel number being equal to the maximum length of the channel list, directly switching to program content corresponding to the second channel number.

Abstract: A display apparatus and an information alert method are disclosed. The method includes: while a first display is playing, controlling, according to acquired alert information, a second display to display an information alert interface, where the alert information displayed on the information alert interface is configured for indicating a state of at least one terminal device connected with the display apparatus.

Abstract: Disclosed are display apparatus and method. The method includes: a first controller of a display apparatus obtains information of a video image in a first user interface on a first display screen of a display apparatus and sends the information of the video image to a server through a first communicator associated with the first controller, where the server is configured to obtain a search identifier of an object in the video image according to the information of the video image and send the search identifier to a second controller of the display apparatus. A second controller of the display apparatus receives the search identifier through a second communicator associated with the second controller and controls a second display screen of the display apparatus to display a third user interface, where the third user interface includes the search identifier of the object in the video image.

Abstract: Disclosed are a display method and a display apparatus for operation prompt information of an input control. The display method includes: during a user's interaction with the display apparatus, obtaining an operation instruction from a user; in response to the operation instruction, determining a target interaction mode for the user's interaction with the display apparatus; in response to a start instruction of an input control generated by invoking of the input control in the target interaction mode, obtaining target operation prompt information for the input control; and generating the input box on the user interface and display the target operation prompt information in the input box.

Abstract: The present disclosure provides a method, apparatus, medium and device for extracting a river drying-up region and frequency, and belongs to the technical field of remote sensing. The method for extracting a river drying-up region and frequency can be applied to efficiently acquiring river drying-up information for a long time within the large spatial region. With the inverse normalized difference water index (iNDWI) and the maximum value composite (MVC) method for the remote sensing images, the present disclosure omits the troublesome step of separately extracting a river range for each image in the conventional method. In addition, the present disclosure quickly obtains the drying-up frequency by counting the total number of available images and the number of non-water images at the same pixel position, and yields a greater efficiency for extracting the river drying-up region and frequency.

Abstract: A method for presenting EPG user interface, including: in response to a first input command, displaying an EPG user interface including a first presentation page; and in response to a second input command, switching the EPG user interface from the first presentation page to a second presentation page, where the first presentation page includes a first set of channels and programs in a first time period corresponding to the first set of channels; and the second presentation page includes the first set of channels and programs in a second time period corresponding to the first set of channels.

Abstract: Disclosed are a display apparatus and a channel control method. The channel control method includes: upon receiving channel number information that constructs a channel number in a display apparatus from a control device, obtaining a second channel number according to an instruction for indicating the channel number information each time; determining whether a length of the second channel number is equal to the maximum length of a channel number of a channel list in the display apparatus; and in response to the length of the second channel number being equal to the maximum length of the channel list, directly switching to program content corresponding to the second channel number.

Abstract: Disclosed are display apparatus and method. The method includes: a first controller of a display apparatus obtains information of a video image in a first user interface on a first display screen of a display apparatus and sends the information of the video image to a server through a first communicator associated with the first controller, where the server is configured to obtain a search identifier of an object in the video image according to the information of the video image and send the search identifier to a second controller of the display apparatus. A second controller of the display apparatus receives the search identifier through a second communicator associated with the second controller and controls a second display screen of the display apparatus to display a third user interface, where the third user interface includes the search identifier of the object in the video image.

Abstract: A display apparatus and an information alert method are disclosed. The method includes: while a first display is playing, controlling, according to acquired alert information, a second display to display an information alert interface, where the alert information displayed on the information alert interface is configured for indicating a state of at least one terminal device connected with the display apparatus.

Abstract: Disclosed is a device for editing channels of a smart TV. The device includes a memory and at least one processor, wherein the memory stores therein computer readable instructions, wherein the instructions are executed by the at least one processor to enable the at least one processor to: receive an interface calling up instruction, and displaying a channel editing list and an operation prompt on a display screen of the smart TV; receive a channel selecting instruction, and determine a channel to be edited in the channel editing list according to the channel selecting instruction; and receive a channel edit instruction, and edit the channel to be edited according to the channel editing instruction, wherein the operation prompt is configured to remind a user that the channel editing instruction is triggered by using a left arrow key or right arrow key of a remote control, and the channel editing instruction is an instruction indicating deletion or a move of the channel to be edited.

Abstract: Disclosed is a device for editing channels of a smart TV. The device includes a memory and at least one processor, wherein the memory stores therein computer readable instructions, wherein the instructions are executed by the at least one processor to enable the at least one processor to: receive an interface calling up instruction, and displaying a channel editing list and an operation prompt on a display screen of the smart TV; receive a channel selecting instruction, and determine a channel to be edited in the channel editing list according to the channel selecting instruction; and receive a channel edit instruction, and edit the channel to be edited according to the channel editing instruction, wherein the operation prompt is configured to remind a user that the channel editing instruction is triggered by using a left arrow key or right arrow key of a remote control, and the channel editing instruction is an instruction indicating deletion or a move of the channel to be edited.

Abstract: Disclosed is a device for editing channels of a smart TV. The device includes a memory and at least one processor, wherein the memory stores therein computer readable instructions, wherein the instructions are executed by the at least one processor to enable the at least one processor to: receive an interface calling up instruction, and displaying a channel editing list and an operation prompt on a display screen of the smart TV; receive a channel selecting instruction, and determine a channel to be edited in the channel editing list according to the channel selecting instruction; and receive a channel edit instruction, and edit the channel to be edited according to the channel editing instruction, wherein the operation prompt is configured to remind a user that the channel editing instruction is triggered by using a left arrow key or right arrow key of a remote control, and the channel editing instruction is an instruction indicating deletion or a move of the channel to be edited.

Abstract: Disclosed is a device for editing channels of a smart TV. The device includes a memory and at least one processor, wherein the memory stores therein computer readable instructions, wherein the instructions are executed by the at least one processor to enable the at least one processor to: receive an interface calling up instruction, and displaying a channel editing list and an operation prompt on a display screen of the smart TV; receive a channel selecting instruction, and determine a channel to be edited in the channel editing list according to the channel selecting instruction; and receive a channel edit instruction, and edit the channel to be edited according to the channel editing instruction, wherein the operation prompt is configured to remind a user that the channel editing instruction is triggered by using a left arrow key or right arrow key of a remote control, and the channel editing instruction is an instruction indicating deletion or a move of the channel to be edited.